<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        ul{
            /* 清楚list样式 */
            list-style: none;
        }

        li{
            width: 100px;
            /* height: 50px; */
            background-color: #ffffff;
            margin-bottom: 5px;
            /* line-height: 50px; */
            border-bottom: 1px dashed rgb(185, 185, 185);
            /* 小图标 */
            background:url(./img/tb.gif) no-repeat center left;
            padding:5px 20px;
        }
    </style>
</head>
<body>
    <ul>
        <li>导航</li>
        <li>历史</li>
        <li>公司</li>
    </ul>
</body>
</html>